Advertisements
Advertisements
प्रश्न
How do you distinguish between a skeletal muscle and a cardiac muscle?
उत्तर
| Skeletal muscle | Cardiac muscle | |
| 1. | They are found in the limbs, body walls, tongue, pharynx, and the beginning of the oesophagus. | They are present in the heart's wall, pulmonary veins, and superior vena cava. |
| 2. | Fibres unbranched. | Fibres branched. |
| 3. | Light and dark brands are present. | Faint light and dark bands are present. |
| 4. | Multinucleate | Uninucleate |
| 5. | Nerve supply through the central nervous system. | Nerve supply from the brain and the automated nervous system. |
| 6. | No oblique bridges or intercalated discs. | No oblique bridges or intercalated discs. |
| 7. | They quickly become weary. | They never become weary. |
| 8. | Extremely fast contraction. | Rapid contraction. |
| 9. | Voluntary | Involuntary |
APPEARS IN
संबंधित प्रश्न
Draw the diagram of a sarcomere of skeletal muscle showing different regions.
Define sliding filament theory of muscle contraction.
Write true or false. If false, change the statement so that it is true:
Actin is present in thin filament
Write true or false. If false, change the statement so that it is true:
H-zone of striated muscle fibre represents both thick and thin filaments.
Write the differences between Actin and Myosin.
Write the difference between:
Red and White muscles
Thin filament of myofibril contains 2 ‘F’ actins and two other proteins namely ______ and ______.
In a muscle fibre Ca++ is stored in ______.
Read the following statements.
- Bands are dark bands and contain myosin
- I bands are light bands and contain actin
- During muscle contraction, the A band contracts.
- The part between the two Z - lines is called a sarcomere.
- The central part of the thin filament, not overlapped by the thick filament is called Hzone.
Of the above statements
In a skeletal muscle, bundles of muscle fibres are held together by ______.
Which of the following statements wrongly represents the nature of smooth muscle?
Match the following and mark the correct option
| Column I | Column II |
| A. Fast muscle fibres | i. Myoglobin |
| B. Slow muscle fibres | ii. Lactic acid |
| C. Actin filament | iii. Contractile unit |
| D. Sarcomere | iv. I-band |
Muscles with characteristic striations and involuntary are ______.
Sarcolemma, sarcoplasm and sarcoplasmic reticulum refer to a particular type of cell in our body. Which is this cell and to what parts of that cell do these names refer to?
